Armrest



FIG. 1 is a perspective view of an armrest showing my new design.

FIG. 2 is a left side elevation view thereof. The right side elevation view is a mirror image of FIG. 2.

FIG. 3 is a front elevation view thereof; and,

FIG. 4 is a top plan view thereof.

The broken lines are for illustrative purposes only and form no part of the claimed design. 

The ornamental design for an armrest, as shown and described. 